Edward burns



Patentfl` Mar. 285 |899.

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DOOR BOLT. (Applcationmed oec. 14, 139s.)

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EDI/YARD BURNS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE STANLEYWORKS, OF SAME PLACE.

DOOR-BOLT.

SPECIFICATION forming part of Letters Patent No. 621,896, dated March28, 1899.

Application tiled October 14, 1898. Serial N0.'693,49 '7. (No model.)

To all whom. it may concern:

Be it known that I, EDWARD BURNS, a citizen of the United States,residing at New Britain, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inDoor-Bolts, of which the following is a specication.

My invention relates to improvements in door-bolts; and the objects ofmy improvement are simplicity and economy in construction and efficiencyin operation.

In the accompanying drawings, Figure 1 is a front elevation of mydoor-bolt. Fig. 2 is a transverse section thereof on the line o: a: ofFig. 1. Fig. 3 is a central longitudinal section of the same, the handlebeing lifted up and shown in elevation. Fig. 4 is afront elevation of aportion of the barrel and plate. Fig. 5 is a detached View showing themiddle portion of one of the broad sides of the hollow bolt. Fig. 6 is aplan view of the blank from which the hollow bolt is made. Fig. 7 is aplan View of the blank from which the barrel and plate are formed. Fig.8 is a front elevation of my door-bolt of a modified construction, thebolt being solid instead of hollow and the barrel and plate being formedof separate pieces instead of integral. Fig. 9 is a plan or edge View ofthe same. Fig. 10 is a detached View showing Vthe middle portion of oneof the broad sides of the solid bolt, and Fig. 11 is a detached view ofthe handle.

A A designate the base-plate, and B-B the barrel formed integraltherewith, said barrel being mainly of an ordinary form, but made squareinstead of round in cross-section and the longitudinal slot 12 for theshank of the handle C to slide through being widened gradually towardthe ordinary transverse locking slots or recesses 13. The blank forforming the barrel and plate is shown in plan View in Fig. 1, and in themain is a wellknown form of blank for an integral plate and barrel, andtherefore requires no detailed description. I make slits 14 in saidblank to form the lugs 15, Fig. 4L, which lugs may be turned back atright angles to the plate AA, as indicated by broken lines in Fig. 3, inorder to assemble the parts, as hereinafter described.

The bolt D is hollow and is formed fromvthe blank, Fig. 6, in which thebroken lines indicate the several bends made in forming said blank intothe hollow bolt D. The portion 16 of the blank is the same as-the broadside 1G of the bolt, 17 the broad side 17 of the bolt, 18 the edge 18 ofthe bolt, 1S) the edge 19 of the bolt, and 2O the ends 20 of the bolt.The slot or hole 2l of the blank is the transverse notch 21 of the boltfor the shank of the handle C to move in, while the lug 22 of the boltfor the cross-head 23 of the handle to rest upon is shown at 22 in theblank as cut on one long side and two ends and is bounded by the brokenline on its other long side, on which line it is bent intothe positionshown in Figs. 2 and 3 inside of the hollow bolt, thereby leaving thebroad side 17 with a T-shaped slot or recess, as shown in Fig. 5. Theshank of the handle C and its cross-head together forma T-shaped device.Then the handle is in a horizontal position and before the bolt isassembled with the plate and barrel, the crosshead 23 of the handle maybe passed into the T-shaped recess on the side 17 of the bolt, and whenso inserted it may be turned up into the position shown in Fig. 3. Asbefore suggested, the lugs 15 at one end of the plate A A are turneddown, as indicated by broken lines in Fig. 3, to elongate the opening atthe back of the barrel. One end of the bolt is 4then passed through thatpart of the barrel same plane as the rest of the plate A A, and

coming in the rear of the edge 19 of the bolt hold the bolt fromdisengagement with the barrel. The bolt,as in the ordinary roundbolts,is

Alocked in either extreme position by the handie and transverse notchesand permitted to move longitudinally when the shank of the handle is inthe longitudinal slot 12 of the barrel; but instead of having the boltpartially rotate and constitute the axis of the handle the bolt beingsquare is held against rotation and the handle is hung on an axis of itsown IOO together with the lug 22,

within the non-rotating bolt. The slotted hollow bolt and the cross-headof the handle,

hold the handle securely within the bolt and at the same time permit itto swing freely on its axis for locking and unlocking the bolt. Thebeveled ends or widened portions of the slot 12 prevent the shank of thehandle from being caught on the corners in case the handle is not atfirst turned up sufficiently to center itself in the slot 12. Besidesbeing a cheap construction the handle will always turn easily, as itdoes away with the friction of the bolt within the barrelrthat ispresent when the bolt rotates therein. Besides this greater security ishad, as it is impossible for any one to unlock the bolt by rotating thebarrel.

In Figs. S to 1l I show a modification of my bolt as to some features;but the general construction and the advantages relating to theoperation are the same as hereinbeforc set forth for the constructionfirst described. In the modification the plate A and the barrel B' aremade from separate pieces and put together by riveting the ends of thelugs on the barrel within holes in the plate, as in ordinary door-bolts;but the barrel, like that first described, is square or rectangular incross-section. So, also, is that of the solid bolt. I forni the T-shapedslot 24, Fig. 10, and the handle C with a cross-head 23, as in theconstruction first described. Before the barrel and plate are assembledI slip the cross-head of the handle into the T-shaped slot in the bolt,then pass the bolt into position in the barrel, and secure the barrel tothe plate, after which the handle can swing freely, as before described,but cannot be detached without separating the barrel from the plate.

lVhile I have shown the solid bolt D', Figs. 8 and 9, as placed in thebarrel that has its plate formed in a separate piece from said barrel,it is evident that the hollow bolt (shown in Figs. 1, 2, and 3) could,if desired,be placed in said barrel, and a solid boltmay be used in abarrel and plate as formed from the onepiece blank, Fig. 7.

It is apparent that sonic changes from the specific construction hereindisclosed may be made,and therefore I do not wish to be under stood aslimiting myself to the precise form of construction shown anddescribed,but ldesire the liberty to make such changes in working myinvention as may fairly come within the spirit and scope of the same.

I claim as my invention- 1. A door-bolt, consisting of the combinationofaplate, abarrel of a rectangular form in cross-section mounted on saidplate and having a longitudinal slot and locking-notches, a bolt of arectangular form in cross-section arranged to slide longitudinallywithin the said rectangular barrel, and a swinging handle, )ivotedwithin a recess in that side of said bolt which is farthest from thesaid plate, substantially as described.

2. The combination in a door-bolt of thcO plate and barrel, a non-rotarybolt arranged to slide longitudinally in said barrel and having atransverse notch opening intoaside recess and therewith forming aT-shaped recess, and a handle having a cross-head resting within saidT-shaped recess and held in place therein by securing the barrel withinthe bolt substantially as described.

3. In a door-bolt, the hollow bolt, having thc EDWARD BURNS.

lVitnesses:

CLARIssA E. BENTLEY, W. A. CRABTREE.

